def get_formatter_name(first_name,last_name):
    full_name = first_name+" "+last_name
    return full_name.title()
musician = get_formatter_name('jimi','hendrix')
print(musician)

def get_formatter_name_option(first_name,last_name,middle_name=''):
    if middle_name:
        full_name = first_name+" "+middle_name+" "+last_name
    else:
        full_name = first_name+" "+last_name
    return full_name.title()

musician = get_formatter_name_option('jim','hendrix','lee')
print(musician)